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Old 07-26-2013, 10:25 AM   #1
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Poly pipe connector replacement

I have a 1990 Class C motorhome with Polybutylene water pipes. I noticed the other day that the one connection to the kitchen faucet had a very small drip coming from the connection from the poly connection to the faucet connection (brass). If I can't tighten this connection enough to get the leak stopped, I we be up for just cutting off both the hot and cold connections and using another connection to the faucet. My question is, what connectors do I need to use for this? The poly pipe doesnt seem to list the diameter on it, although it looks like its 1/2". It just says "2M" multiple times on it, one in blue and the other in red, I assume which means hot and cold lines? I dont want to cut these connectors before finding something that I can fix them with first.
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Old 07-26-2013, 12:33 PM   #2
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I have PB pipe in our double wide mobile home. I use Quest fittings when needed (and I need them often now that the plumbing is getting old and brittle!).

You didn't mention what sort of connection it is, so hard to offer any specifics. Here's a bunch of different types:
POLYBUTYLENE repair fittings - PlumbingSupply.com®
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Old 07-26-2013, 01:16 PM   #3
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Gary,

The pipe fitting looks like the following. Not sure about the actual end of the pipe itself, as I havent tried to push the connector down the pipe to see. I assume the end has the cone shaped plastic piece, but ill verify tonight.
Attached Images
  
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Old 07-26-2013, 04:54 PM   #4
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That is a compression fitting. They normally seal very well. Gary linked to the proper parts for your plumbing system. They may be purchased at any hardware or plumbing store.
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Old 07-26-2013, 05:26 PM   #5
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Dblduce- Are you sure it is polybutylene?? Red and blue lines are usually PEX, there are many types of fittings for PEX. (Although the Time period is right for Polybutylene)

Polybutylene Pipe Defects and Water Damage Home Inspection FYI
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Old 07-26-2013, 07:27 PM   #6
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That's a fairly standard compression fitting for PB pipe, possibly even the Quest brand. I would think that most any hardware store would have it. The link I gave in my previous reply should show it.
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Old 07-27-2013, 07:44 AM   #7
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its not pex. the mh is from 1990. the pipe itself is stiffer and gray in color. the printing on the pipes is blue and red.
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Old 07-27-2013, 11:50 AM   #8
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I replaced all the Poly B in my 78 motorhome (it had BLACK poly b!) with color coded (red/blue) PEX since I didn't know the history of it and a small section had already been replaced with a crappy piece of rubber hose.

I just fixed the supply ends to the shower in a 1995 trailer of someone I know which has grey poly b. I used my PEX ratcheting cinch clamp tool and cinch clamps on the Poly B side of the PB/PEX adapter and it's holding up great, no leaks.
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